1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60159e1ab090689d7066897339758eafb9b02810ac70d90ca7c18e6b38f4b2d7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5516b51-340a-4d8f-968b-3178392b5267.json and https://artists.proofprofile.net/proofs/artist/e5516b51-340a-4d8f-968b-3178392b5267.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2382124ca87df7c7a686e131a640b8a14bcd5e4e7d77bd773a0d15ece28e2db1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2427298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c29f2c9ea25a4cf32c033d81de52036831545d6051c4c55c1d29a33930066b7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2427299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9c754df0d17032ef24c37c6d05fe236eb1135a48f90c82172aae8a0c926bb6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2427300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d983277ce68258a598cfdfc66c45259d9eadf246ed33802f151787cecd7cf72. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2427301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcf96d981d255ffee43f820151db29f97f8badd44c64e33a0e2b35fb52456b6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2427302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829702b721f2bf9f39b97c50c77dfe98a17ad56bd7981cbffb425a380dfc8ff7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFE2301138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebac12044b43263afa436bb7e633b292da905d9f283d1db6882e581b4ac40176. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ62435063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a9271ee7871067524c360b20ec11b5827aa627d724fbf36e369403600d0854. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES72447513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd185e02e981c605b94579de084b51340b51a3307e010d15aaf5e201afda96953. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2427303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e52cd614cd97437ca70fd0396ff1f2a784a7b6f2871176a51508c5d0283b5c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2427304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a9271ee7871067524c360b20ec11b5827aa627d724fbf36e369403600d0854. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES72447513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebac12044b43263afa436bb7e633b292da905d9f283d1db6882e581b4ac40176. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ62435063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829702b721f2bf9f39b97c50c77dfe98a17ad56bd7981cbffb425a380dfc8ff7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFE2301138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec050d85d5fa3e1f33ceb823d3832040b9e4b1563fd1cf9d6cfc131f366f309. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAS2358538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633ce0548c282c3eb9d97f204a7c06498ed72816dd93904f213b021f82038170. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2337699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc976915acef2cb406bc1fdb905583a53c1b279fb5aa9706bc03df61e4b2370be. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWT2344651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98487425d92ddd9aad09b3f64810e033a4ac1c3d1420dc4af5737ae2bff25b3a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWR2328148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67d42464daff182863b2b1adbc633bff414f3cf1cdf0471474c39ac9df83ab0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN82386541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfb60f55f5da8e3b14192ca510518f4ba3f1bc006f055ce8b3767e7b393dd87. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92303724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1833863933324f859e76ad9fe349e2843470ff7896c2bf30c2d3ec05131f2da. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA72351398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1696bcf6b3d9ba580f4a61a6696a76fecfcd5fb3be0612fb0e012bed2576d872. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42391822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf19e60c35be73234b206100c67a71f68e3810f39bc7094cc00116db59157ae. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42304381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445bb6f2018d9e2d86d571b891b373fea8cc310300b07a414bfb7693f4aa2fe2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2295545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03277ccf8be1c080843bcc42dbf96da60b341a35cc1345e18740134675e5d39. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e18d0dd014b74b2e1a6d1235365c2ec801cd6f1f39475ecff74cbd2ffd879b5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cd018ab5b43ccfaba97dfa9d85cfac203cf5951f42b89bddd4d7294a27c662. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2400896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e94fbaee4c53f84f09ea48f4118fc0d1ef278f5ca55c4f433c02591980e2e0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2401653.
Thanks To My Haters (Bar Wars Cypher #13)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e9dbe2b138ffdb45e7b273ae3a461bccc2ad517c2004dc1ad6c9c910072502. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2402043.
Ambitions Of A Trap Star (Bar Wars Cypher #14)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41ee8d23edef651d0cd6194809cde7c239e1648d4d3b13563001c28f575ddf7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2401912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8338a900be5fd1216e88a356e231cd245344959ce4a6e0964bde01277a2e01. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2402520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cdd368b2307fbb359aac39001ba7258b04b3bf2cdb1d407292646f7dea8eac. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2402519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6b8e414697eb7d8c6a3a1a9552aecd584ea697ffcbc9293e69574d5865deeb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAX2411626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d769011ec991a9788253b167498944c57d7eadbfe2fb68ae3e413f40d723e6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAX2411627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad81f40bf6c211773e453f279afccd44e2293e8c0530560fcb5b919b527e11d1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAX2411629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b12025abfe901d7527c58cf4b1dff0ed2058240be53de50d543dbf0c4ff71e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAX2411630.
It Goes Down (Thizzler Cypher) - Song Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a0656667b3229c872230c77d03917612b2adc7b7bf11449d1ab7f9593b9010. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:06:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAX2411634.
Don't Play That (Thizzler Cypher) - Song Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9c6916f56c70cd822f6654bccaeb6046fbf65ffde49f32cbfd740abce07482. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAX2411635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cd018ab5b43ccfaba97dfa9d85cfac203cf5951f42b89bddd4d7294a27c662. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2400896.